Cross slide



July 9, 1946. s. L. CASEL'LA CROSS SLIDE.

Filed Aug. 6, 1945 s Sheets-Sheed 1 INVENTOR 5ECONDO L. CASE! LA ATTORNEY s. L. CASELLA 2,403,581

CROSS SLIDE Filed. Aug. 6, 1945 5 Sheets-Sheet 2- INVENTOR SL-CONDO L, c4551 m E ATTORNEY 1 1 q I w J J J 11.11..

July 9,1946. L, A E A 2,403,581

CROSS SLIDE Filed Aug. 6, 1943 3 Sheets-Sheet 3 INVENTOR- $c0N00 4. 045511;;

ATTORNEY Patented July 9, 1 946 CROSS SLIDE Secondo L. Casell'a, New York, N. Y., assignorto Morey Machinery 00., Inc., New York, N. Y., a

corporation Application August 6, 1943, Serial No. 497,620

Claims.

This invention relates to cross slides, and it is particularly directed toa cross slide fora lathe.

An object of this invention is to provide a cross slide of the character described, having highly improved means for moving the slide relative to the saddle-for both rough. and line adjustment.

A further object of this invention is to provide in a cross slide of the character described, a saddle slidably mounted on the bed of the lathe, and a slide mounted 'on the saddle for transverse movement relative to the bed, a gear rotatably mounted on the saddle, a rack meshing with the gear, and a screw rotatably and non-slidably connected to the slide and having threaded engagement within a threaded opening in the rack, whereby the slide can be moved by rotating the gear or by turning the screw.

Yet a further object of this invention is to provide in a cross slide, of the character described, a highly improved brake means to hold the gear against movement when turning the screw.

A still further object of this invention is to provide a cross slide of the character described, including a lever for rotating the gear which meshes with the rack on the slide, and means on the lever to actuate the brake to retain the gear against movement.

Still a further object of this invention is to provide a strong, compact, and durable cross slide of the' character described, which shall be relatively inexpensive to manufacture, smooth and positive in operation, and practical and efficient to a high degree in use. 7

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplitied in the construction hereinafter, described, and of Which the scope of the application will be indicated in the following claims. i

In the accompanying drawings, in which is shown various possible illustrative embodiments of this invention,

Fig. 1 is an elevational'view of a cross slide embodying the invention, on the bed of a lathe, and with parts broken away and in cross section. Fig. -2 is a sectional view-taken on line 2 -2 of Fig. 1.

Fig. 3 is a sectional view taken on line 3- 3 of Fig. 2.

4 is a sectional view taken on line 4-4 of Fig. 3.

Fig. 5 is a sectional view taken on line 55 "of 2 Fig. 6 is a sectional View taken on line 6-6 of Fig. 1.

Fig. '7 is a sectional view taken on line 'i'! of Fig. 5.

Fig. 8 is a sectional view taken on line 83 of Fig. 5.

' Referring now in detail to the drawings, reference numeral H3 designates the bed of a turret lathe provided with parallel ways H; and reference numeral [2 designates a cross slide embodying the invention, and mounted on said ways. The cross slide l2 comprises, generally, a saddle l3 and a slide it slidably mounted thereon. The saddle [3 comprises a wall 45 having a pair of aligned surfaces l6 contacting the top surfaces of the ways I l Extending downwardly from wall E5 are front and rear guides i! and Na having inner surfaces I8 and Ida, respectively, contacting outer surfaces of said ways I l.

Attached to the undersides of the guides ll and Ila, as by screws I9, are gibs 2E3 engaging the undersides of the ways I l. The wall is formed on the underside thereof with a longitudinal slot 25, and slidably mounted in said slot is longitudinal rack 25 formed with gear teeth 2'1 on the underside thereof.

The rack 20 is formed with a longitudinal through opening 28. At the forward end of the rack, the opening 28 is formed with screw threads 29 for the purpose hereinafter appearing.

The saddle i2 is formed on this upper side with longitudinal dove-tailed groove 33. The slide M is slidably mounted on the saddle and has a dovetail projection 34 on itsunderside received within the dove-tail groove 35. The slide may be formed with usual T slots at, both longitudinal and transverse to mount the front and rear two posts 31.

,Fixed to the forward end of the slide i i, is a bearing member 35. Non-slidably jcurnalled in said member 46 is a longitudinal shaft at having an elongated threaded portion 42 extended within the opening 28 of the rack member 26, and engaging the threads .29. Keyed to the forward end of shaft 4! is a hand wheel 55 having a hub 45 receiving the shaft. Mounted on the hub 45 and fixed thereto by said screw Qt, is a dial member 41, which may be appropriately stamped or marked with a scale lla.

Member has a pointer 58a at the top to cooperate with the scale.

The saddle I2 is provided with a pair of spaced, parallel aligned bearing members 5t. Journalled within said bearing members is a horizontal shaft 5|. Mounted on said shaft and between said bearings 59, and keyed to the shaft, as by a Woodruff key 52, is a segmental gear 53 having teeth 54 meshing with the teeth 21 of the rack 26.

It will now be understood that rotation of the shaft will cause rotation of the segmental gear, and hence, longitudinal movement of the rack 26, and of shaft 4| and slide I4. Furthermore, rotation of the hand wheel 44 will cause movement of the slide relative to the rack and saddle due to the threaded engagement between the shaft portion 42 and the internal threads 29 of the rack. The shaft 5! may thus be rotated to obtain quick or rough adjustment of the slide, whereas the handwheel 44 may be rotated to obtain fine adjustment.

Means is provided to rotate the shaft 5|. To this end shaft 5| is formed at one end with a transverse vertical slot 55 forming a pair of parallel walls 60 on opposite sides of said slot. The walls 66 are formed with aligned bearing openings 61. The axis of said openings is perpendicular to the axis of shaft 5| and crosses said axis. Mounted within said openings 51 is a transverse pivot pin 68. Mounted on said pivot pin for rotation about the axis thereof, is a lever '69 having an upwardly extending handle.

The lever 19 has a portion II received within the slot I35 and contacting the inner surfaces of walls 66. The lever may be fixed to the pivot pin 51 by a set screw 1Ia.

One of the walls 66 may be formed with an opening 3'2 and the lever may be provided with socket 14. In the socket is a spring pressed hall 15 adapted to snap into opening '52 to retain the lever against accidental rotation about the of pin 68 in the position of the lever shown in full lines. In this position, the lever may he rotated about theaxis of shaft 5| to rotate gear 53.

In this position, furthermore, edge portion 19b of the lever, contacts the inner surface File of shaft 5! at the bottom of the slot It will oe noted that the lever can be rotated about the axis of pin 58, for the purpose therefor appear- When it is desired to rotate shaft 5!, the lever 19 is first rotated in clockwise direction about the of said pivot pin to the position shown in Fig. 5 of the drawings and in this position the ball 15 snaps into the opening 12, and edge 191) contacts the bottom surface 5Ia of the slot 65.

The lever may then be rotated to the right or left about the axis of the shaft 5| for moving the slide, as heretofore explained.

Means is provided to retain the said segmental gear 53 against movement so that the hand wheel 44 may be rotated for moving the slide I4 relative to the rack. To this end there is fixed to one of the bearing members 59, a brake cup 16 concentric with shaft 5|. Said cup 16 has a bottom wall 16a fixed to the bearing as by screws 11. It also has a cylindrical wall 15b extending from said bottom wall.

The bottom wall 16a has a central opening 160 to freely receive the shaft 5|. Mounted on the shaft 5| and disposed within the cup 16 is a brake member 90 formed with a central opening 9| to receive said shaft. Brake member 90 is keyed to the shaft 5| by key 92. Said brake member 90 is formed with a center hub 93, from which there extend integral semi-circular wings 94, connected to the hub as at 95, at a point diametrically opposite to the end portions 91 of said wings.

The end portions 91 are-inclined inwardly and towards the bottom wall 16a of the cup, for the purpose hereinafter appearing. The wings 94, are normally loose within the cylindrical wall 16. When they are forced apart, however, they will engage the inner surface of said cylindrical wall, thus serving as a brake for the shaft 5 I.

Means is provided controlled by the lever 10 to actuate the brake 90. To this end, lever portion H has a downward extension 98 projecting below the shaft 5|. Said extension is formed with a slot 99 to provide a pair of parallel walls I00. Said parallel walls I00 are formed with aligned openings IIII in which is journalled a transverse pin I02.

Mounted on said pin is a Wedge member I94. Wedge member I94 is formed with an eye portion I05 disposed between the walls I09 and receiving the pin I02 therethrough. Extending from the eye I05 is a wedge I06 received between the ends 91 of the brake wings 94. Wedge I96 tapers to conform tothe inclinededges 91..

It will now be understood thatwhen lever 10 is rotated in a counter-clockwise direction, (looking at Fig. 5 of the drawings) the wedge pin I66 will be moved toward the bottom Wall of the cup and force brake wings 94 apart to grip the cylindrical wall 16b of the cup, thus causing a braking action for retaining shaft 5| against movement.

In this position, segmental gear is retained against rotation, thus permitting the hand wheel 44 to be rotated for the screw adjustment of the slide.

The friction of the wedge I96 between the brake wings 94 will retain the lever in braking position. In such position, the lever cannot be rotated sideways about the axis of the shaft 5|. Portion-1| of the lever is furthermore formed with airinclined edge III] adapted to contact "the bottom surface 5Ia of the slot 65 to serve as a stop for limiting wedge movement of the wedge pin I06,

The slide l4 may be provided with a pair of symmetrical stop screws I20 disposed on opposite sides of a stop IZI, fixed to the saddle |3 for limiting movement'of the slide relative to the saddle. V v,

The cross slide may be moved longitudinally of the bed In by means of an internal screw threaded nut I25, fixed to the saddle, and receiving therethrough a screw shaft I26 meshing'with said nut. The shaft I26 may be rotated in any suitable manner. The nut I25 may be provided with enlarged internal screw threaded openings I21 at the ends thereof, to which are screwed pipes I30 covering the shaft.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a cross'slide, a saddle,'a slide slidably mounted thereon, a rack slidably mounted relative to said slide, screw threaded means rotatably and non-slidably connected to the slide and having threaded engagement with said rack, a shaft on said saddle, a gear on said shaft meshing with said rack, and a lever on said shaft for rotating the same about its axis, said lever being pivoted to said shaft about an axis perpendicular to and intersecting the longitudinal axis of said shaft, 2. fixed brake member fixed to said saddle, an expandible brake member keyed to the shaft and rotatable therewith and disposed within the first brake member, and means on the lever to expand the second brake member and cause it'to grip the first brake member. 2. In a cross slide, a saddle adapted to be slidably mounted on the bed of a lathe, a slide slidably mounted on the saddle transversely thereof, a rack extending longitudinally of said slide, ,a

shaft on said saddle, a gear keyed to the shaft and meshing with said rack, screw threaded means to cause movement of said slide relative to said rack, said shaft being formed with a slot, a pivot pin on said shaft traversing said slot and intersecting the axis of said shaft, a lever having a portion received within said slot and pivoted to said pivot pin, a brake cup fixed to said saddle and surrounding said shaft, an expandible brake member within said cup surrounding said shaft and keyed to said shaft, and means on a lever to expand said expandible member to grip the inner surface of said cup.

3. In a cross slide, a saddle adapted to be slidably mounted on the bed of a lathe, a slide slidably mounted on the saddle transversely thereof, a rack extending longitudinally of said slide, a shaft on said saddle, a gear keyed to the shaft and meshing with said rack, screw threaded means to cause movement of said slide relative to said rack, said shaft being formed with a slot,-

a pivot pin on said shaft traversing said slot and intersecting the axis of said shaft, a lever having a portion received within said slot and pivoted to said pivot pin, a brake cup fixed to said saddle and surrounding said shaft, an expandible brake member within said cup surrounding said shaft and keyed to said shaft, and means on a lever to expand said expandible member to grip the inner surface of said cup, said lever being adapted to release the expanded means in one angular position thereof about said pin and being adapted to actuate said expanding means in another position thereof about said pin.

4. In a cross slide, a saddle adapted to be slidably mounted on the bed of a lathe, a slide slidably mounted on the saddle transversely thereof, a rack extending longitudinally of said slide, a shaft on said saddle, a gear keyed to the shaft and meshing with said rack, screw threaded means to cause movement of said slide relative to said rack, said shaft being formed with a slot,

a pivot pin on said shaft traversing said slot and intersecting the axis of said shaft, a lever having a portion received within said slot and pivoted to said pivot pin, a brake cup fixed to said saddle and surrounding said shaft, an expandible brake member within said cup surrounding said shaft and keyed to said shaft, and means on a lever to expand said expandible member to grip the inner surfaces of said cup, said lever being adapted to release the expanded means in one angular position thereof about said pin and being adapted to actuate said expanding means in another position thereof about said pin, and means to limit rotation of said lever about said pin upon moving said lever towards either of said positions.

5. In a cross slide, a saddle adapted to he slidably mounted on the bed of a lathe, a slide slidably mounted on the saddle transversely thereof, a rack extending longitudinally of said slide, a shaft on said saddle, a gear keyed to the shaft and meshing with said rack, screw threaded means to cause movement of said slide relative to said rack, said shaft being formed with a slot, a pivot pin on said shaft traversing said slot and intersecting the axis of said shaft, a lever having a portion received within said slot and pivoted to said pivot pin, a brake cup fixed to said saddle and surrounding said shaft, and expandible brake member within said cup surrounding said shaft and keyed to said shaft, and means on a lever to expand said expandible member to grip the inner surface of said cup, said lever being adapted to release the expanded means in one angular position thereof about said pin and being adapted to actuate said expanding means in another position thereof about said pin, means to limit rotation of said lever about said pin upon moving said lever towards either of said positions, and spring ball means to retain said lever in brake release position.

SECONDO L. CASELLA. 

